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现代隧道技术 2017, Vol. 54 Issue (3) :112-119    DOI:
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超浅埋隧道下穿铁路引起变形敏感度数值分析
(1 南京地铁建设有限责任公司, 南京 210000; 2 岩土力学与堤坝工程教育部重点实验室, 南京 210098;3 河海大学岩土工程研究所, 南京 210098)
Numerical Analysis of the Sensitivity of Deformation Caused by a Super Shallow-Buried Tunnel Passing under an Existing Railway
(1 Nanjing Metro Co. Ltd., Nanjing 210000; 2 Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Nanjing 210000; 3 Geotechnical Research Institute of HoHai University, Nanjing 210000)
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摘要  南京地铁 4 号线仙林湖—桦墅站超浅埋区间隧道下穿江南水泥厂专用铁路线, 对地表变形控制要求较高。该地段岩溶较为发育, 岩性较差, 施工存在较大风险。文章结合隧道下穿既有铁路现场地质及施工情况, 应用 ABAQUS 软件建立分析模型, 针对土体注浆加固前后、 有无路基荷载、 是否考虑路基荷载作用间歇性等情况下隧道施工引起的地表沉降及路基变形进行研究, 并将分析结果与监测数据进行比较。研究结果表明, 本文数值分析结果正确, 同时验证了本工程采用的施工工艺能保证工程稳定性, 可为类似工程提供参考。
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Abstract: The super shallow-buried running tunnel between Xianlinhu station and Huashu station of Nanjing sub? way line 4 passes under the dedicated railway of the Jiangnan Cement Plant, and the requirements for ground deformation control are relatively high. The karst is developed and the lithology is unfavorable at this section, and it causes great risks during construction. Based on the actual geological and construction conditions, an analysis model was established using ABAQUS to study the surface settlement and subgrade deformation caused by tunnel construction under two cases: the subgrade load and intermittent function of the subgrade load are considered and not considered before and after the grouting reinforcement of the soil mass. A comparison was carried out regarding the analysis results and monitoring data. The results show that the numerical analysis results are correct and the construction technology guarantees smooth construction of this project.
KeywordsMetro Tunnels,   Existing Railways,   Soil disturbances,   Settlement,   Numerical Simulation     
基金资助:基金项目: 国家自然科学基金(51309086).
作者简介: 作者简介: 杨庆刚 (1977-), 男, 工学博士,高级工程师, 主要从事路基路面工程研究工作, E-mail:qinggyang@126.com. 通讯作者: 倪小东(1981-), 男, 副研究员, 主要从事渗透变形方面的教学研究工作, E-mail: lulingxd@126.com.
引用本文:   
.超浅埋隧道下穿铁路引起变形敏感度数值分析[J]  现代隧道技术, 2017,V54(3): 112-119
.Numerical Analysis of the Sensitivity of Deformation Caused by a Super Shallow-Buried Tunnel Passing under an Existing Railway[J]  , 2017,V54(3): 112-119
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